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Check if a string exists in a file

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Top Forums Shell Programming and Scripting Check if a string exists in a file
# 8  
Old 07-23-2015
Quote:
Originally Posted by Scrutinizer
Note: Even though this will work with the sample at hand, since it is only the last digits that need to be ignored, an anchor ($)should be used. Also, to ignore any kind of spaces and make it more robust, $1 should be used rather than $0, so instead of
Code:
gsub(/[[:digit:]]/,X,$0)

try:
Code:
sub(/[[:digit:]]+$/,X,$1)

I would have thought (with an example including HUNGARY1), that there could also be entries like NEW ZEALAND7. In which case, $0 would be better than $1.

The samples provided all had single decimal digit numbers, but looking back at the original problem statement: "The strings in someStrings.txt sometimes end with a number ." (not end with digit), you may be correct in interpreting it as non-negative decimal number). Of course, the intent could even be that any string that would be treated as a number when scanned by strtod() should be considered a number. Without a clearer definition of terms by kraljic, we're just guessing at what regular expression is needed.
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